US6874203B2 - Saw-tooth wire for a set of rollers - Google Patents

Saw-tooth wire for a set of rollers Download PDF

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Publication number
US6874203B2
US6874203B2 US10/472,625 US47262504A US6874203B2 US 6874203 B2 US6874203 B2 US 6874203B2 US 47262504 A US47262504 A US 47262504A US 6874203 B2 US6874203 B2 US 6874203B2
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US
United States
Prior art keywords
tooth
angle
cylinder
breast
sawtooth wire
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US10/472,625
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English (en)
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US20040154137A1 (en
Inventor
Axel Bauersachs
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Truetzschler Card Clothing GmbH
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Truetzschler Card Clothing GmbH
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Publication of US20040154137A1 publication Critical patent/US20040154137A1/en
Assigned to TRUTZSCHLER CARD CLOTHING GMBH reassignment TRUTZSCHLER CARD CLOTHING GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAUERSACHS, AXEL
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for

Definitions

  • the present invention relates to a sawtooth wire for a cylinder lining of a fibre-processing machine, in particular a carding machine, comprising a tooth base extending in the longitudinal direction of the sawtooth wire and a plurality of teeth arranged one behind the other in the longitudinal direction of said sawtooth wire, each of said teeth having a tooth breast inclined forward at an angle (breast angle (BW)) and a tooth back inclined at an angle (back angle (RW)) relative to the longitudinal direction of said sawtooth wire, the imaginary extensions of the tooth breast and the tooth back intersecting and forming thus a tooth tip.
  • BW breast inclined forward at an angle
  • RW back angle
  • Such sawtooth wires are used for linings of carding machines and the like.
  • the sawtooth wires are wound onto the cylinder side by side and form a so-called sawtooth wire lining in the case of which the teeth are all oriented in one direction.
  • the tooth breast is the leading part of the tooth.
  • the tooth back is the leading part of the tooth. Transfer from the fast-rotating main cylinder to the slow-rotating doffer cylinder is effected in that the fibres are pushed into the sawtooth wire lining of the doffer cylinder from the main cylinder.
  • the present invention achieves this object by the features of the generic clause of claim 1 in combination with the feature that the inclination angle (back angle (RW)) of the tooth back increases from the tooth base to the tooth tip.
  • RW back angle
  • the tooth back as well as the tooth breast are implemented in a straight line, i.e. the tooth back and the tooth breast extend, in a convergent manner, from the tooth base in a straight line and meet at the tooth tip.
  • This has inevitably the consequence that in the case of a large breast angle, i.e. strongly inclined teeth, the back will have a small angle of inclination, i.e. a complementary small back angle will be formed.
  • the large breast angle of a doffer cylinder is desired, since, during transfer of the fibres, the cylinder taking over the fibres will then be able to take them up more effectively.
  • the solution according to the present invention permits the realization of a large breast angle, so that the fibres can be taken over more easily, in combination with a large back angle, so that the fibres can be delivered more easily to the subsequent stuffer cylinder that rotates at a lower speed.
  • the solution according to the present invention can be realized in a particularly simple manner when the tooth back has at least one bend.
  • the tooth back from the tooth base to the bend can then have a back angle corresponding to that of a conventional sawtooth. From the bend to the tip, the back angle is, however, larger so that this upper part of the tooth back does not meet the tooth breast at the tip of the tooth. It proved to be advantageous when the bend is located on a level corresponding to at least approx. 2 ⁇ 3 of the tooth height.
  • the range of approx. 2 ⁇ 3 of the tooth height can, however, be a preferred range. In this way, a sufficiently high stability of the tooth is achieved in combination with an improved functionality during transfer of the fibres to the next cylinder.
  • the increase in the inclination angle (from RW 1 to RW 2 ) can be at least 10%.
  • the ratio of the two inclination angles is approx. 3:2.
  • the present invention has a particularly advantageous effect in the case of sawtooth wires having an inclination angle of the tooth breast that is ⁇ 40°, preferably ⁇ 45°.
  • the inclination angle of the tooth back from the bend to the tooth tip is at least 36°, preferably at least 40°.
  • the present invention additionally relates to a cylinder, in particular a doffer cylinder or a stuffer cylinder, of a carding machine provided with a sawtooth wire lining according to the present invention.
  • FIG. 1 shows in a schematic representation a carding machine with depicted fibre flow
  • FIG. 2 shows in an enlarged representation a sawtooth portion according to detail II of FIG. 1 .
  • FIG. 1 shows the main elements of a carding machine. These main elements are the main cylinder 1 which is normally operated at a circumferential speed of 800-1,500 m/min and which rotates clockwise, and the subsequent doffer cylinder 2 which rotates anticlockwise at a circumferential speed of normally 60-300 m/min.
  • the doffer cylinder 2 is followed by a first stuffer cylinder 3 which rotates clockwise at a circumferential speed amounting normally to approx. 50-80% of the circumferential speed of the doffer cylinder 2 .
  • the first stuffer cylinder 3 is followed by a second stuffer cylinder 4 which rotates anticlockwise at a circumferential speed amounting to 60-90% of the circumferential speed of said first stuffer cylinder 3 .
  • the main cylinder 1 is provided with a sawtooth wire lining in the case of which the tooth breast faces the direction of rotation.
  • the fibres are entrained by the tooth breast of the lining and transferred to the doffer cylinder 2 .
  • This doffer cylinder 2 is provided with a sawtooth wire lining in the case of which the tooth back 5 faces the direction of rotation, whereas the tooth breast 6 faces the tooth breast of the sawtooth wire lining of the main cylinder 1 .
  • the transfer of fibres between the main cylinder and the doffer cylinder 2 takes place in that the fibres are stuffed by means of the sawtooth wire lining of the main cylinder into the pockets formed by the tooth breast 6 of the sawtooth wire lining of the doffer cylinder which rotates at a lower circumferential speed.
  • the transfer from the doffer cylinder 2 to the first stuffer cylinder 3 takes place in a similar way, said transfer to the first stuffer cylinder 3 being then, however, not effected by the tooth breast but by the tooth back of the sawtooth wire lining of the doffer cylinder. Transfer from the first to the second stuffer cylinder 4 is effected in the same way.
  • FIG. 2 shows exemplarily the sawtooth wire of the lining of the doffer cylinder 2 of FIG. 1 .
  • the lining of the first stuffer cylinder 3 can be implemented in the same way.
  • the structural design of the sawtooth wire shown in FIG. 2 and described hereinbelow is suitable to be used for the linings of cylinders in the case of which the fibres are taken over from a faster-rotating cylinder and delivered to a slower-rotating cylinder.
  • the direction of movement of the lining is indicated by arrow 7 in FIG. 2 .
  • the sawtooth wire shown there has a sawtooth base 9 extending in the longitudinal direction 8 of the wire and a plurality of teeth 10 which are arranged one after the other in the longitudinal direction 8 of the sawtooth wire.
  • Each of said teeth has a tooth breast 6 and a tooth back 5 , the imaginary extensions of the tooth back 5 and of the associated tooth breast 6 intersecting at one point, viz. the tooth tip 11 .
  • the tooth breast 6 is inclined forward; it forms a pocket together with the neighbouring tooth back.
  • the respective angles in the drawing are designated as follows: BW is the breast angle which is measured between the tooth breast 6 and an imaginary line perpendicular to the tooth base 9 .
  • RW stands for the back angle and is measured between the back 5 of a tooth and an imaginary horizontal line interconnecting the tips 11 of the individual teeth.
  • the tooth back 5 of the teeth 10 there is a bend 12 in the tooth back 5 of the teeth 10 , said bend being located on a level corresponding to approximately 2 ⁇ 3 of the height of the respective teeth 10.
  • the tooth back 5 extends from the lowermost point 13 up to the bend 12 in a straight line.
  • the back angle of this portion of the tooth back is referred to as RW1 and amounts to 30° in the embodiment shown here.
  • RW 2 the associated back angle
  • the tooth shape substantially deviates from the hitherto customary tooth shape, which is indicated by the broken line 14 in the right tooth of FIG. 2 .
  • the tooth back 5 is much steeper in the upper area thereof. In the embodiment shown here, the breast angle amounts to 40°.
  • the tooth shape represented in FIG. 2 shows that the back angle in the upper area of the teeth 10 is independent of the breast angle BW.
  • this tooth shape permits a large breast angle and a large back angle to be realized at the same time.
  • the large breast angle facilitates the taking over of fibres from a faster-rotating cylinder
  • the large back angle facilitates the delivery of fibres to a slower-rotating cylinder because the steeper rear profile will stuff the fibres better into the lining of the subsequent slower-rotating cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Communication Cables (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US10/472,625 2001-03-22 2002-03-08 Saw-tooth wire for a set of rollers Expired - Fee Related US6874203B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10114108.4 2001-03-22
DE10114108A DE10114108B4 (de) 2001-03-22 2001-03-22 Sägezahndraht für eine Walzengarnitur
PCT/EP2002/002576 WO2002077338A1 (de) 2001-03-22 2002-03-08 Sägezahndraht für eine walzengarnitur

Publications (2)

Publication Number Publication Date
US20040154137A1 US20040154137A1 (en) 2004-08-12
US6874203B2 true US6874203B2 (en) 2005-04-05

Family

ID=7678610

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/472,625 Expired - Fee Related US6874203B2 (en) 2001-03-22 2002-03-08 Saw-tooth wire for a set of rollers

Country Status (5)

Country Link
US (1) US6874203B2 (de)
EP (1) EP1373611B1 (de)
AT (1) ATE366330T1 (de)
DE (2) DE10114108B4 (de)
WO (1) WO2002077338A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070028423A1 (en) * 2005-06-03 2007-02-08 Graf Ralph A Method and device for manufacturing sawtooth card clothing and all-steel card clothing as well as sawtooth wire
US20090158558A1 (en) * 2007-12-21 2009-06-25 Truetzschler Gmbh & Co. Kg Saw-tooth clothing for rollers and/or cylinders of flat cards or roller cards
US20110075411A1 (en) * 2009-09-25 2011-03-31 Cree Led Lighting Solutions, Inc. Light engines for lighting devices
US20130133159A1 (en) * 2010-08-09 2013-05-30 Bekaert Carding Solution Nv Wire profile for card clothing
US10280535B2 (en) 2014-04-07 2019-05-07 Truetzschler Gmbh & Co. Kg All-steel clothing for a carding machine
US11447893B2 (en) 2017-11-22 2022-09-20 Extrusion Group, LLC Meltblown die tip assembly and method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005390B4 (de) * 2006-02-03 2021-08-12 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde, Krempel o. dgl., zur Reinigung von Fasermaterial z. B. aus Baumwolle, die eine schnelllaufende erste oder Hauptwalze umfasst
DE102006005391A1 (de) * 2006-02-03 2007-08-09 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde, Krempel o. dgl., zur Reinigung von Fasermaterial z. B. aus Baumwolle, mit einer schnelllaufenden oder Hauptwalze
DE102006005389A1 (de) * 2006-02-03 2007-08-09 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde, Krempel o. dgl., zur Reinigung von Fasermaterial z. B. aus Baumwolle, die eine schnelllaufende erste oder Hauptwalze aufweist
WO2009030551A1 (en) * 2007-09-06 2009-03-12 Nv Bekaert Sa Self-cleaning comb needle
CH704774A1 (de) * 2011-04-08 2012-10-15 Graf & Co Ag Sägezahngarnitur.
KR101719493B1 (ko) 2014-01-23 2017-03-24 그로츠-베케르트 카게 카드 와이어
CN103741275B (zh) * 2014-01-24 2016-04-13 浙江中新毛纺织有限公司 一种梳棉机的刺辊结构
CN107022812B (zh) * 2017-05-03 2019-04-12 新疆天羚绒业科技股份有限公司 一种动物绒毛纤维精准分离装置及分离方法
WO2020025640A1 (en) * 2018-07-30 2020-02-06 Swm Luxembourg Sarl Apparatus and method for making fibrous webs having isotropic structure

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US795946A (en) 1903-09-30 1905-08-01 Ewald Thielmann Card-clothing for fancy-rollers of carding-machines.
US2937413A (en) * 1956-09-27 1960-05-24 John D Hollingsworth Carding tooth
US4653152A (en) 1984-02-29 1987-03-31 Nakagawa Seisakusho Mfg. Co., Ltd. Metallic card clothing
EP0322474A1 (de) 1987-12-29 1989-07-05 Graf + Cie AG Sägezahndraht einer Kardengarnitur für Textilmaschinen, die wahllos orientierte Faservliese herstellen
US4953264A (en) * 1987-07-18 1990-09-04 John D. Hollingsworth On Wheels, Inc. Metallic wire used with textile fiber processing elements, in particular, with cleaning rollers
US4964195A (en) * 1988-11-18 1990-10-23 Hollingsworth John D Metallic card clothing
US5581848A (en) * 1994-10-12 1996-12-10 Staedtler & Uhl Saw tooth fittings
US6035493A (en) 1996-02-07 2000-03-14 Carlton; William Charles Textile carding and relevant apparatus
US6408487B1 (en) * 1998-10-30 2002-06-25 Commonwealth Scientific And Industrial Research Organisation Card wire, especially for doffers and workers
US6523226B2 (en) * 2000-03-15 2003-02-25 Graf + Cie Ag Sawtooth wire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60220211A (ja) * 1984-04-13 1985-11-02 建設フアスナ−株式会社 プラグ内臓式雌ネジアンカ−とその製造法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US795946A (en) 1903-09-30 1905-08-01 Ewald Thielmann Card-clothing for fancy-rollers of carding-machines.
US2937413A (en) * 1956-09-27 1960-05-24 John D Hollingsworth Carding tooth
US4653152A (en) 1984-02-29 1987-03-31 Nakagawa Seisakusho Mfg. Co., Ltd. Metallic card clothing
US4953264A (en) * 1987-07-18 1990-09-04 John D. Hollingsworth On Wheels, Inc. Metallic wire used with textile fiber processing elements, in particular, with cleaning rollers
EP0322474A1 (de) 1987-12-29 1989-07-05 Graf + Cie AG Sägezahndraht einer Kardengarnitur für Textilmaschinen, die wahllos orientierte Faservliese herstellen
US4854012A (en) * 1987-12-29 1989-08-08 Graf & Cie Ag Saw tooth wire of a saw tooth-card clothing for a textile machine producing randomly oriented fibre fleeces
US4964195A (en) * 1988-11-18 1990-10-23 Hollingsworth John D Metallic card clothing
US5581848A (en) * 1994-10-12 1996-12-10 Staedtler & Uhl Saw tooth fittings
US6035493A (en) 1996-02-07 2000-03-14 Carlton; William Charles Textile carding and relevant apparatus
US6408487B1 (en) * 1998-10-30 2002-06-25 Commonwealth Scientific And Industrial Research Organisation Card wire, especially for doffers and workers
US6523226B2 (en) * 2000-03-15 2003-02-25 Graf + Cie Ag Sawtooth wire

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
German Patent Office Action.
International Preliminary Examination Report-English.
International Search Report.

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070028423A1 (en) * 2005-06-03 2007-02-08 Graf Ralph A Method and device for manufacturing sawtooth card clothing and all-steel card clothing as well as sawtooth wire
US7743470B2 (en) * 2005-06-03 2010-06-29 Graf + Cie Ag Method and device for manufacturing sawtooth card clothing and all-steel card clothing as well as sawtooth wire
US20090158558A1 (en) * 2007-12-21 2009-06-25 Truetzschler Gmbh & Co. Kg Saw-tooth clothing for rollers and/or cylinders of flat cards or roller cards
US7818848B2 (en) * 2007-12-21 2010-10-26 Truetzschler Gmbh & Co. Kg Saw-tooth clothing for rollers and/or cylinders of flat cards or roller cards
US20110075411A1 (en) * 2009-09-25 2011-03-31 Cree Led Lighting Solutions, Inc. Light engines for lighting devices
US20130133159A1 (en) * 2010-08-09 2013-05-30 Bekaert Carding Solution Nv Wire profile for card clothing
US8789244B2 (en) * 2010-08-09 2014-07-29 Nv Bekaert Sa Wire profile for card clothing
US10280535B2 (en) 2014-04-07 2019-05-07 Truetzschler Gmbh & Co. Kg All-steel clothing for a carding machine
US11447893B2 (en) 2017-11-22 2022-09-20 Extrusion Group, LLC Meltblown die tip assembly and method
US12644205B2 (en) 2017-11-22 2026-06-02 Extrusion Group, LLC Meltblown die tip assembly

Also Published As

Publication number Publication date
DE10114108A1 (de) 2002-10-02
ATE366330T1 (de) 2007-07-15
DE50210413D1 (de) 2007-08-16
WO2002077338A1 (de) 2002-10-03
EP1373611B1 (de) 2007-07-04
DE10114108B4 (de) 2005-05-19
US20040154137A1 (en) 2004-08-12
EP1373611A1 (de) 2004-01-02

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